第
48
卷第
2
期
2014
年
2
月
西安交通大学学报
JOURNAL
OF
XI'
AN
JIAOTONG
UNIVERSITY
DOI:
10.
7652/
xjtuxb201402023
Vo
l. 48
No.2
Feb.2014
再认记忆的事件相关电位多域特征值研究
尤二涛，徐进，张永兴
(西安交通大学生物医学信息工程教育部重点实验室，
710049
，西安)
摘要:为了更好地了解再认记忆状态下的事件相关电位
(ERP)
在时域、频域和空间域的性质，与
传统的
ERP
信号特征提取方法往往都局限于时域特征不同，该研究采用非负张量分解
(NTF)
技
术，提取再认记忆实验中与
"Old"
和
"N
巳
W
吁
1
激相关的
ERP
的多域特征值。多域特征值是从多个
导联
ERP
信号的时频转换中提取的，因此可以同时反映
ERP
在时域、频域和空间域上的性质。研
究结果发现，多域特征值可以明显地反映出不同剌激类型下
ERP
信号的差异，与额区新旧效应相
关的
FN40
。在
"New"
剌激下的多域特征值显著大于
"Old"
剌激下的，与顶区新旧效应相关的
P60
。
在
"Old"
剌激下的多域特征值显著大于
"New
吁
IJ
激下的，说明多域特征值能很好地用于区分和识别
再认记忆中的新旧剌激，这不仅为再认记忆的研究提供了一个新方法，而且为基于
ERP
的认知功
能研究提供了新的思路和途径。
关键词:事件相关电位;非负张量分解;再认记忆;多域特征佳
中图分类号
R318
文献标志码
A
文章编号
0283-987X(
2014
)02-0
137-06
Multi-Domain
Feature
of
Event-Related
Potential
in
Recognition Memory
YOU
Ertao
,
XU
Jin
,
ZHANG
Yongxing
(MOE
Key
Laboratory
of
Biomedical
Information
Engineering
,
Xi'
an
]iaotong
University
,
Xi'
an
710049
,
China)
Abstract:
To
explore
the
properties
of
event-related
potential
(ERP)
related
with
recognition
memory
in
the
time
,
frequency
and
spatial
domains
,
nonnegative
tensor
factorization
(NTF)
was
applied
to
extract
multi-domain
feature
from
ERP
signals
related
with
"r
、归
w"
stimulus
and
"Old"
stimulus
respectively
during
recognition
memory
task
,
which
is
different
from
the
traditional
method
to
extract
the
feature
of
time
domain
,
and
the
multi-domain
feature
was
extracted
from
time-frequency
transformation
of
multiple
channel
ERP
signals
so
that
it
can
reflect
the
properties
of
ERP
in
the
time
,
frequency
and
spatial
domains
simultaneously.
It
is
discovered
that
the
multi-
domain
feature
is
able
to
discriminate
ERP
for
different
stimulus.
The
multi-domain
feature
of
FN400
related
with
frontal
old/new
effect
to
"New"
stimulus
gets
greater
than
the
feature
to
"Old"
stimulus.
The
multi-domain
feature
of
P600
associated
with
parietal
old/
new
effect
t
。
"Old"
stimulus
gets
larger
than
the
feature
to
"New"
stimulus.
Therefore
,
the
multi-domain
feature
extracted
by
NTF
reveals
properties
of
ERP
in
the
time
,
frequency
and
spatial
domains
,
and
provides
a
novel
method
to
recognition
memory
research
and
cognitive
function
research
based
on
ERP
signa
l.
Keywords:
event-related
potential;
nonnegative
tensor
factorization;
recognition
memory;
multi-domain
feature
收稿日期
2013-06-09
0
作者简介:尤二涛
0987-)
，男，硕士生;徐进(通信作者)
，女，教授。
基金项目
z
国家自然科学
基金资助项目
(3127106
1)
;中央高校基本科研业务费专项资金资助项目(对
j20100185
，
xjj2010004
7)。
网络出版时间
2014-01-10
网络出版地址
http://www.cnki.net/kcms/
detai
l/
6
1.
1069.
T.
20140110.
1749.009. html
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